THE EFFECT OF FASTING ON LEUCINE DEGRADATION IN CHICK SKELETAL MUSCLE | Zendy

G Wu | Zendy; James R. Thompson | Zendy

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THE EFFECT OF FASTING ON LEUCINE DEGRADATION IN CHICK SKELETAL MUSCLE

Author(s) -

G Wu,

James R. Thompson

Publication year - 1987

Publication title -

canadian journal of animal science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.377

H-Index - 64

eISSN - 1918-1825

pISSN - 0008-3984

DOI - 10.4141/cjas87-020

Subject(s) - leucine , skeletal muscle , catabolism , medicine , endocrinology , transamination , chemistry , broiler , metabolism , protein degradation , biochemistry , biology , amino acid , food science

In vitro degradation of leucine in intact extensor digitorum communis muscles from fed and from 12- and 24-h-fasted 10-day-old broiler chicks was investigated. The net rate of leucine transamination and the rates of oxidative decarboxylation, oxidation of carbons 2–6 and total CO 2 production from 14 C-labelled leucine increased (P 0.05) from the values obtained in muscles from the fed group. These results demonstrate that the rate of leucine catabolism in the skeletal musculature of the chick is increased during fasting. Increased leucine degradation provides energy for muscle metabolism and constitutes a mechanism whereby chicks are able to adapt to fasting. Key words: Leucine degradation, skeletal muscle, fasting, chicks

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